Fantastic sign up form. Creative way to provide sign up form. Not sure about usability (on my opinion not much difference from usual form), but it is eye-catching and “tangible”.
Continuous Deployment is about deploying code changes to production as rapidly as possible. “Every commit should be instantly deployed to production”. Is it possible? IMVU proved it is. Nice goal we should strive for. Extreme case of Continuous Integration is Continuous Deployment.